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Home >> GMC >> 2015 >> Canyon SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0078: Control Module Communication Low Speed CAN Bus Off >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Canyon and 2017 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC U0078 is not set.
    • If DTC U0078 is not set 
  3. All OK
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